generate dynamic device array for use in CI scripts

Usage: generate_ci_matrix.py platform [extra]
e.g. generate_ci_matrix.py esp32 or generate_ci_matrix.py esp32 extra

bin/generate_ci_matrix.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+
+"""Generate the CI matrix"""
+
+import os, sys, configparser, json
+
+rootdir = 'variants/'
+
+options = sys.argv[1:]
+
+outlist=[]
+
+if len(options) < 1:
+    print(json.dumps(outlist))
+    exit()
+
+for subdir, dirs, files in os.walk(rootdir):
+    for file in files:
+        if file == 'platformio.ini':
+            config = configparser.ConfigParser()
+            config.read(subdir + '/' + file)
+            for c in config.sections():
+                if c.startswith('env:'):
+                    section = config[c].name[4:]
+                    if 'extends' in config[config[c].name]:
+                        if config[config[c].name]['extends'] == options[0] + '_base':
+                            if 'board_level' in config[config[c].name]:
+                                if ((config[config[c].name]['board_level'] == 'extra') & ('extra' in options)):
+                                    outlist.append(section)
+                            else:
+                                outlist.append(section)
+
+print(json.dumps(outlist))